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FreeBSD: (Multiple Advisories) (CVE-2023-0286): FreeBSD -- Multiple vulnerabilities in OpenSSL

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FreeBSD: (Multiple Advisories) (CVE-2023-0286): FreeBSD -- Multiple vulnerabilities in OpenSSL

Severity
4
CVSS
(AV:L/AC:M/Au:N/C:P/I:P/A:P)
Published
02/07/2023
Created
02/11/2023
Added
02/09/2023
Modified
08/31/2023

Description

There is a type confusion vulnerability relating to X.400 address processing inside an X.509 GeneralName. X.400 addresses were parsed as an ASN1_STRING but the public structure definition for GENERAL_NAME incorrectly specified the type of the x400Address field as ASN1_TYPE. This field is subsequently interpreted by the OpenSSL function GENERAL_NAME_cmp as an ASN1_TYPE rather than an ASN1_STRING. When CRL checking is enabled (i.e. the application sets the X509_V_FLAG_CRL_CHECK flag), this vulnerability may allow an attacker to pass arbitrary pointers to a memcmp call, enabling them to read memory contents or enact a denial of service. In most cases, the attack requires the attacker to provide both the certificate chain and CRL, neither of which need to have a valid signature. If the attacker only controls one of these inputs, the other input must already contain an X.400 address as a CRL distribution point, which is uncommon. As such, this vulnerability is most likely to only affect applications which have implemented their own functionality for retrieving CRLs over a network.

Solution(s)

  • freebsd-upgrade-base-12_3-release-p12
  • freebsd-upgrade-base-12_4-release-p2
  • freebsd-upgrade-base-13_1-release-p7
  • freebsd-upgrade-package-openssl
  • freebsd-upgrade-package-openssl-devel
  • freebsd-upgrade-package-openssl-quictls
  • freebsd-upgrade-package-py310-cryptography
  • freebsd-upgrade-package-py311-cryptography
  • freebsd-upgrade-package-py37-cryptography
  • freebsd-upgrade-package-py38-cryptography
  • freebsd-upgrade-package-py39-cryptography
  • freebsd-upgrade-package-python310
  • freebsd-upgrade-package-python311
  • freebsd-upgrade-package-python37
  • freebsd-upgrade-package-python38
  • freebsd-upgrade-package-python39

References

  • CVE-2023-0286

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